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Abstract

A CDMA receiving apparatus which can accurately perform phase tracking for a reception signal even under an environment wherein the reception delay amount varies in a period shorter than the processing time of a synchronization detection and phase tracking section. The CDMA receiving apparatus includes a plurality of FINGER processing sections individually provided for a plurality of paths and including de-spreading sections for receiving a signal spread with a spread code and arriving through the paths and de-spreading the reception signal with a de-spread code and channel estimation sections for estimating the paths based on results of the processing of the de-spreading sections, and a synchronization detection and phase tracking section for outputting a reception delay amount of the reception signal in a predetermined period to the de-spreading sections. Each de-spreading section includes a plurality of correlators for individually correcting, when the reception delay amounts are received, the reception delay amounts and performing de-spreading processing. Each channel estimation section includes level measurement sections for individually measuring correction value levels of the correlators, a level comparison section for comparing the measurement levels, and a path change-over section for selecting the correlation magnitude of that one of the correlators which is detected to output the highest measurement level.

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